Drain fitting



April 28, 1931- R. c. SHAND DRAIN FITTING Filed Feb. 25, 1928 LWENTOR ByPqyir/a/d Shana ll lll Patented Apr. 28, 1931 UNITED STATES REGINALD C. SHANE; OF PIEDMONT, CALIFORNIA DRAIN FITTING Application filed February '23, 1928. Serial N0. 256,170.

I This invention relates generally to fittings for connection with drain pipes, and which are intended to be installed in floors or in conjunction with other surfaces being drained. It is designed particularly to be used in the floor of 'a shower bath.

In the construction of built-in shower baths, it has become common practice to line the floor and .at least a portion of the side walls with sheet lead or :some other suitable metal. This lead lining is then covered by some suitable material, such as cement surfaced by tile or terraza. The straineris arranged flush with the floor and 'is carried by a fitting secured to the drain pipe. The

edge of the lead lining, where it is cut away to receive the strainer fitting, is sealed in some manner to the fitting to prevent leakage of water. When such installations are completed, it is customary to test out the floor for leakages. This testing in the past has been accomplished by stopping the strainer fitting in some makeshift manner, as

by means'of a rubberstopper or by means of a piece of paper placed over the strainer, after which the floor is flooded with water and left-in this condition for a considerable time. The difliculty with this method of testing is that the closures for thestrainer fitting are unsatisfactory and do notprovide a'perfect seal. Furthermore they cannot be satisfactorily employed for testing the drain pipes below the fittings.

' Itis an object of this invention to devise a drain fitting which is manufactured with a removable closure which, after the fitting is installed, may be removed upon the completion of a testing operation.

It is a further object of this invention to devise a drain fitting having novel features which facilitate its installation and render the same more satisfactory in use.

F-urther objects of the invention will appear from the following description in "which I have set forth the preferred embodiment of my invention. It is to be understood that the appended claims are to be accorded a range of equivalents consistent with the state of the prior art. I

The single view of the drawing is a side elevati'onal view in cross section showing the fitting of this invention appliedtothe floor of a shower. i

The invention in its preferred form consists of a hollow body member 10 adapted to have threaded connection with the end of'a drain pipe 11. Formed upon the outer periphery of body member 10, there is an annular portion 12 which is preferably dished as shown and is adapted to underlie the sheet metal lining 13 of the shower floor 14. ,Adapted to overlie the lining 13 directly above the annular portion 12, there is a suitable annular clamping member 15 which is adapted to be forced toward the annular member 12 as by means of a nut 16, this nut being threaded to body member 10. When the'nut 16 is screwed down upon the clainping member 15 totightly clamp the lining 13 between member 14 and annular portion 12, a leak proof seal is formed, and to render this seal more effective I preferably provide an annular rib 17 upon the upper face of annular portion 12, this rib serving to force a portion of the lead lining to an annular groove 18 provided upon the lower face of clamping member 15.

The fitting is completed by a strainer 21 which i-spreferably carried by a member 22, this member having threaded engagement witlrthe body member 10. Upon the inner periphery of the body member 10 there is formedan annular shoulder 23,and the lower edge of member 22 provides another annular shoulder 24. Clamped between shoulders 23 and 24 thereis a closure 26, preferably in the form of a disc. This :closure may be conveniently formed of wood, and to provide a more effective seal with shoulder 23, its lower face maybe covered by a paper disc'27. WVhen the strainer carrying member 22 is assembled with respect to body 10 and is screwed down upon the closure 26, this closure efiectively seals the fitting and prevents entrance of water to the drain pipe.

As the strainer carrying member 22 is not sealed with respect to the adjacent fioor 14:, I preferably provide openings by way of which water seeping thru the tile of the floor may be drained from the upper surface of the lead lining 13. For this purpose I provide the clamping member 15 with one or more openings 28 and these openings are adapted to communicate with one or more openings 29 in the body member 10, these latter openings communicating with the interior of body 10 immediately above t'he annular shoulder 23. By having openings 29 above the annular while the closure 26 is .in position. i

In practice I prefer to manufacture the fitting with the closure 26 clamped in place. When the fitting is installed, this closure remains in position until the shower has been completed. The shower may then be tested forleaks without the necessity of providing a special closure for the drain, and the efiectiveness of this test is assured because of the efiective sealing provided by the closure. When the test has'been completed, the strainer carrying member 22 may be disengaged or unscrewed from the body and the closure 26 removed, after which member 22 is again screwed in place. If any leakage should occur thru the surface of the floor or between the floor and the strainer carrying member 22, this leakage will find its way thru openings 28 and 29 into the drain pipe. The manner in which the lead lining is clamped between the annular portions 12 and the clamping member 15 provides an effective seal between the lead lining and the body of the fitting, and facilitates installation.

As my closure is firmly clamped in place, it can also be used for testing the drain pipe below the fitting. Such testing is accomplished by filling the drain pipe below the closure with water under pressure, while the sections of the drain pipe and the joints are examined for leakages.

I claim: I Y

1. A drain fitting comprising a body member having a passageway through the same, an annular portion'carried by the outer periphery of said body member, said body member having openings adapted to be disposed below the upper level of a floor for drainage of liquid from the upper side of the annular portion through said passageways, a strainer member having a threaded connection with the upper portion of said body and adapted to receive liquid drainage from the'upper level of the floor, an annular shoulder formed upon the body member below said openings and surrounding said passageway, a test closure disc disposed upon said shoulder, and a shoulder formed upon said strainer member adapted to engage the upper side of the disc whereby said disc may be removably retained in the position to seal the lower portion of the passageway against liquid drainage passing through said strainer member and also seal said drainage openings.

2. A drain fitting comprising a body member having a passageway through the same, said body member having drainage openings adapted to be disposed below the upper level of the floor with which the fitting is associated for the drainage of liquid through said passageway, a strainer member having a detachable connection with the upper portion of said body and adapted to receive liquid drainage fromthe upper level of the floor, a test closure shoulder 23, I prevent drainage of" water" disc, means associated with the body member and. the strainer. ,member respectively for clamping the disc therebetween whereby the disc canbe removably retained within the fitting to seal the lower portion of the passageway against liquid drainage passing through said strainer member, said test closure disc being clamped in such a position between the body member and the strainer respectively as toperform the dual function of closing the said drainage openings.

3. A drain fitting comprising a body member having a passageway through the same, said body member having a plurality of drainage openings, a strainer having a detachable connection with the upper portion of said body member and adapted to receive liquid drainage, an annular shoulder formed upon the body member below said drainage openings and surrounding said passageway, a test closure disc disposed upon said shoulder, and a shoulder formed upon said strainer member adapted to engage the upper side of the disc whereby said disc can be removably retained within the fitting to-seal the lower portion of the passageway against liquid drainage passing through said strainer mem ber and performing the dual function of sealing said drainage openings. 4. A drain fitting comprising a'structure including a body member having a passageway through the same, a strainer detachably connected with said structure, said structure having draining openings for conducting seepage to said passageway, a test closure disc, means carried by said structure and strainer respectively for removably clamping the test closure'disc therebetween at a point for closing said drainage openings, whereby said test closure disc performs the dual function of sealing the lower portion of the passageway against liquiddrainagepassing through the strainer and also seepage through said drainage openmgs.

5. A drain fitting comprising a structure including a body member having a passageway throughthe same, a strainer detachably connected with said structure, said structure my hand.

REGINALD O. SHAND. 

